Density 6.5 g/cm³ | Appearance grey solid | |
Antimony telluride is an inorganic compound with the chemical formula Sb2Te3. It is a grey, crystalline solid, although its melting point, density and colour may depend on the crystalline form it adopts.
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Synthesis
Antimony telluride can be formed by the reaction of antimony with tellurium at 500–900 °C.
2Sb(l) + 3Te(l) → Sb2Te3(l)Applications
Like other binary chalcogenides of antimony and bismuth, Sb2Te3 has been investigated for its semiconductor properties. It can be transformed into both n-type and p-type semiconductors by doping with an appropriate dopant.
Sb2Te3 forms the pseudobinary intermetallic system germanium-antimony-tellurium with germanium telluride, GeTe.
Like bismuth telluride, Bi2Te3, antimony telluride has a large thermoelectric effect and is therefore used in solid state refrigerators.